Wire-nail machine.



PATENTED JAN. '24, 1905.

4 BHEETS8HEET L INVENTOR Atty.

' J. 'F. DONAGHY.

WIRE NAIL MACHINE.

APPLICATION FILED JUNE 6 1902 I WlTl ESSES:

PATBNTED JAN. 24, 1905.

'J; F. DONAGHY. WIRE'NAIL MACHINE. APPLIOATIH FILED JUNE 8 1902.

I 4 sums-8111:1112.

WIRE N APPLIOATI'O PATENTED JAN. 24, 1905.

DONAGHY.

AIL MAGHI-NE.

FIRE.

QM WMM PATENTED JAN. 24, 1905.

No. 780,873 J. F. DONAGHY.

WIRE NAIL MACHINE.

' APPLICATION FILED JUNE 6. 1902.

4 SHEETB-8HBBT 4.

FIGJL WITNESSES UNITED STATES Patented January 24., 1905.

PAT NT OFFICE.

JOSEPH F. DONAGHY, OF (JORAOPOLIS, PENNSYLVANIA, ASSIGNOR OF ON E- THIRDTO EDWARD H. FOREMAN, OF SHOUSETOWN, PENNSYLVANIA.

WIRE-NAIL MACHINE.

SPECIFICATION forming part of Letters Patent No. 780,873, dated January24, 1905.

l I Application filed June 6, 1902. Serial No. 110,443.

.To (I/ZZ whom it may concern.-

Be it known that I, JOSEPH F. DONAGHY,- a citizen of the'United States,residing at Coraopolis, in the county of Allegheny. and StateofPennsylvania, have invented or discovered certain-new and usefulImprovements in VVire- Nail Machines, of which improvements thefollowing is a specification.

The invention described herein relates to certain improvements inmachines for the manufacture of wire nails. As heretofore constructedmachines for this purpose were formed with quite a number of parts orelements sliding in guideways on the bed of the machine. Thisconstruction is objectionable, for the reason that little particles ofsteel formed inthe shearing of the completed nail from the wire lodgeupon the guide-surfaces,-

thereby clogging the machine'and cutting and ruining the guidewaysthemselves. This greatly increases the cost of maintenance of themachines and also involving a large loss of time.- a I The object of thepresent invention is to provideja machine whose parts shall have arocking movement on pivotal supports or pins so covered and protected asto render the lodging of pieces of steel or other foreign matter on thewearing places practically impossible.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings, forming a part of this specification,Figure 1 is a top plan view of my improved nail-machine. Fig. 2 is alongitudinal section on the plane indicated by the line II II, Fig. 1.Figs. 3 and 4 are sectional detail views of portions of the grippingmechanism and their connections. Figs. 5 and 6'are sectional detailviews illustrative of the cutters and their adjusting devices. Fig. 7 isa transverse section on a plane indicated by the line VII VII, Fig. 1.Figs. 8 and 9 are detail viewsiof portions ofthe wire-t'eed mechanism.Figs. 10 and 11 are detail views of the auxiliary shear mechanism, andFig. 12 is a sectional view showing the manner of mounting thecross-head carrying the upsetting or heading punch.

On the bed-plate 1 is secured or formed a block 2, having suitabledovetailed ways for the reception of an anvil-block 3. In the inner faceof this anvil-block are formed suitable guideways for the reception ofthe gripping-jaws 1 and 5, the jawt being adjustable by means of screw6, while the jaw5 is adapted to be reciprocated positively in onedirection and to be withdrawn by a spring in the other direction. Themeans for imparting the positive inward movement to the jaw 5 consistsof a lever 7. pivotally mounted in suitable bearings 8 and having oneend held against a cam 9 by a spring 10. The opposite end of the lever 7is provided with an adjustable bearing-pin 11, adapted to bear against apin.

12, adjustably connected to or secured in the slidingaw 5, as clearlyshown in Figs. 1, 8,

and 1. When the lever 7 is shifted by the spring 10, the jaw 5 and thepin 12 are caused to follow up the pin 11 by means of a spring 13,surrounding a sleeve 14:, mounted on the rod 15, said spring bearing atone end against a shoulder on the rod 15 or its sleeve and itsoppositeend against the bottom of a socket formed in the block 2. Asclearly shown in Fig. 3, the rod 15 is connected to the sliding jaw 5,so that on the shifting of the lever 7 by its spring 10 the sliding jaw5 may be withdrawn from the' jaw 4. The cam 9 is so constructed that ifthe end of the lever had a continuous bearing on the cam a suificientmovement is not imparted to the r sliding jaw 5, the abutment 10 isshifted to permit the desired movement. By this construction the machinecan be maintained easily in operative condition without redressing orrenewing of the parts. l

The heading-die 16 is adjustably mounted,

as clearly shown in Fig. 2, in the horizontal arm of a bent lever orangular cross-head 17. The opposite end of said lever is provided withlaterally-extending arms having pivotal bearing upon the frame of themachine. As shown in Fig. 12, such pivotal bearing is preferably formedby means of screws 18 passing through the sides of the frame and havingtheir inner ends cone-shaped and fitting within similarly-shapedbearings or sockets in the ends of an arm 17 a on the lever orcross-head. The arrangement of the pivotal supports at a considerabledistance on each side of the plane of movement of the lever forms such afirm bearing for the lever that guides to prevent the lateral movementof the latter are unnecessary. It will be observed by reference to Fig.2 that the pivotal point of the lever or cross-head 17 is in orapproximately in the plane of the outer faces of the combined grippingand heading dies 4 and 5, so that during the heading operation theheading-die 16 will have practically no vertical movement, although thecross-head carrying the same is shifted in the are of a circle. Thislever or cross-head is operated by an eccentric 19, the eccentric beingsurrounded by a strap 20, provided with an arm or abutment 21, engaginga recess in the rear of the cross-head or lever, at or near the angle orapex thereof, so as to force the lever forward to form the heads. Itwill be observed by reference to Fig. 2 that at all times the weight ofthe lever or crosshead is eccentric to its pivotal point on the side ofits operating-eccentric 19, so that the weight of the lever will causeit to follow its operating-abutment 21. It is preferred, however, toconnect the abutment with the lever by means of side plates 22, securedon opposite sides of the lever or cross-head and engaging trunnionsformed on the abutment 21.

Levers 23 are provided with overlapping wings 24, through which passes apivotal pin 25, said pin also extending down through the bed-plate 1, asclearly shown in Figs. 2 and 7. At their outer ends these levers areprovided with pins preferably carrying friction-rollers and extendinginto cam-grooves formed in disks 26. The heads 27 on these levers areprovided with guideways for the reception of adjusting-wedges 28, whichare adapted to be shifted vertically by means of collars 29, mounted onscrews 30, fitting in threaded openings in the heads, said collarsengaging notches in the wedges, as clearly shown in Fig. 5. Theseadjusting-wedges are provided with guideways for the reception of theshearcarrying blocks 31, adapted to be adjusted vertically on the wedgesby means of screws 32 passing through arms 33 on the heads and engagingthe shear-blocks. The cutter-blades 34 are mounted in suitable guidewaysin the shearcarrying blocks and are adapted to be shifted or adjusted bymeans of screws 35. While not necessary, it is preferred to reinforcethe levers by enlargements 36 in line with their pivotal points, asshown in Figs. 1 and 7, and in order to prevent any sagging of thelevers supporting wedgeblocks 37 are interposed between the levers andthe bed-plate, as shown in Fig. 7 and are adapted to be adjusted tocompensate for wear by means of screws 38 passing through lugs on thewedge-blocks and into the bedplate of the machine.

It will be observed that the center of movement of the levers 23'i. e.the pivot-pin 25 is a plane passing through the wire operated on, sothat the edges of the cutting-blades will move practically in the sameplane when cutting the wire, or, in other words, these edges will meetsquarely and without any push or pull on the wire.

The location of the center of movement of the levers 23 is permitted bythe employment of a bent lever mounted as described for carrying theheading-die, the horizontal die of the heading-lever being free tooscillate or move in the arc of a circle above the pivotpoint 25.

The feed mechanism for the wire consists of a sliding block 39, mountedupon suitable ways 40 in front of the machine and adapted to be shiftedback and forth by means of a crank 41, connected to the slide 39 bymeans of a pitman 42, as shown in Fig. 1. One, two, or more disks 43 43,dependent upon the number of wires to be fed, are mounted one above theother upon a pin 44, each of said disks carrying a ball or roller 45,adapted when the disks are in one positionv. a, d uring the forwardmovement of the slide--to press the wires against abutment 46, carriedby the slide. The disks are held so as to cause the rollers in the disks43 43 to grip the wires by means of springs 47, bearing against arms 4848 on the disks. By this construction the wires are clamped between theballs or rollers and the abutment during the forward or feed movement ofthe slide; but when the slide begins its return movement the pull of thewires will tend to move the balls or rollers away from the abutment,permitting the free device or mechanism to slide over the wires. As itis sometimes desirable to stop the gripping action of the feed mechanismon one of the wires without stopping the operation of the other parts ofthe machine, I provide a wedge-block 4%), arranged in a frame 50,carried by the guides or ways 40, supporting the feed mechanism. Asshown in Fig. 8, this frame is provided with two slots or guideways, onein line with the arm 48 on one of the disks and the other in line withthe corresponding arm 48 on the other disk, so that when this block isshifted forward along to the front end of one of the slots it will pressthe arm in line with said slot in against the spring, and so shiftingthe ITO ball or rollerthat it can have no bearing on the wire during themovement of the feed mechanism in either direction.

The wire or wires to be formed into nails are fed throughstraightening-rollers in front ofthe feed mechanism, through guide-tubes51 on the slide, and through guiding-passages on the block 2 and head 3,said tubes or passages being a little larger than the wire operated on,so as to allow free movement of the latter. On the block 2 on the sideadjacent to the feed mechanism I provide two auxiliary shear-blades 5252, operative in conjunction with the ends of the tubes 53, throughwhich the wires are fed, to shear the wire, as hereinafter stated. Theseauxiliary shearblades are preferably made in the form-of steel stripshaving openings therethrough for the passage of the wire and normallyheld by springs 54, with the holes in line with the wire-feed passagesand with their ends hearing against the. flat face of the head 55 of alever pivoted to-the block 2. As will be seen by reference to Fig. 10,the shifting of the lever to the left will operate the upper auxiliaryshear-blade and to the right the lower auxiliary shear-blad e, so thatone or the other of the wires may be cut off.

By arranging the feed mechanism so that the inward limit of its movementwill end closely adjacent to the auxiliary shear-blades it will bepossible to continue the feed of the length of wire until only 'so muchof it remains as is approximately equal to the distance between theheading-face of the gripping-jaw and the point to which the feedmechanism moves when feeding. By shearing off this waste piece andallowing it to drop out of the'line of feed a new wire can be fed in,and its end will abut against portion 5 will be within the guide tubesor passages 53 in the block 2. As these passages are approximately thesame size as the wire being fed, it is evident that the portion 6- Willbe pushed forward out of the passages by the next length of wire fedinto the machine, the front end of such length abutting against the rearend of the portion 6, said ends being held in alinement,with each other.by the walls of the guide-passage. It will be obnail can be cut fromthe portion 6 when fed forward by a succeeding length of wire.

By the employmentof means such as described for preventing the action ofthe grippers of the feed mechanism without stopping the reciprocation ofthe latter and by rendering it possible as described to automaticallyremove the waste portions as described much delay in operating themachine and labor is avoided.

It is preferred that the cams 9 and 26, the eccentric 19, and thecrank-arm 41 should be secured to or formed on the same shaft, as shown.It will be observed that all the parts operating on the wire to form thenail are carried or actuated by levers and that the only slides employedare those for one of the gripping-jaws and for the feed mechanism.

As the means shown in Fig. l for'reciprocating the feed-block 39 tendsto twist the feed-block andits guides, it is preferred to employ theconstruction shown in Fig. 2 for such purpose. As shown, a lever 56 ispivotally mounted in the 'frame of the machine in a plane passingthrough the guides 40, and the upper end of such lever is looselyconnected to the feed-block 39, as by the projec-.

tion of its upper end into a socket or recess in the, feed-block, sothat there will not beany tendency to lateral shifting or twisting ofthe block during its back-and-forth movements. Th is lever is connectedto the headinglever 17.by a pitman 57, having one end adjustable on oneof said levers, as the lever 56, whereby the stroke of the lever 56 maybe changed as desired. As it will be readily understood that the leveracts in the plane passing through the guides 40, there will not be anytendency to twist the latter.

I claim herein as my invention 1. A wire-nail machine having incombination gripping-dies, wire-feed mechanism, a guide-passage fordirecting the wire to said 'dies, means for shearing said wire withinthe limits of the guide-passages, substantially as set forth. 1

2. A wire-nail machine having in combination gripping-dies, areciprocating carriage, a stationary and a movable member mounted on thecarriage, a spring-actuated arm on the movable member, and an adjustableholding block or Wedge mounted on a stationary portion of the machine,substantially as set forth. 8. A wire-nail machine having in combinationgripping-dies, a reciprocating carriage, two or more automatic grippersmounted on the carriage, means-for preventing the operation of thegripping-dies during the movement of the carriage, guide-passagesinterposed between the feed mechanism and the gripping-dies, and meansfor shearing the wires Within the limits of the passages, substantiallyas set forth. i

4. A wire-nail machine having in combina- &

tion gripping-dies, a header, shearing mechanism operative in the rearof the grippingdies, a Wire-feed mechanism, two or more guidepassagesfor directing the wire from the feed mechanism to the gripping-dies, twoor more strips or bars provided with openings therethrough normally inline with the guidepassages and means for shifting said strips or barsthereby shearing the wire by the conjoint action of the walls of theguide-passages and those of the openings in the strips or bars,substantially as set forth.

5. A wire-nail machine having in combination a header, means foroperating the header, a reciprocating wire-feed-mechanism lever havingone end loosely connected to the feed mechanism and a connection fromthe lever to the header, the lever and its connections with the headerand feed mechanism being in a vertical plane passing through the header,substantially as set forth.

6. In a Wire-nail machine the combination of a bent lever, a heading-diecarried by said lever, means for operating the lover, a wirefeedmechanism, a lever having a loose connection with the feed mechanism andan adjustable connection from the feed-lever to the header-lever, thelever and its connections with the header and feed mechanism being in avertical plane passing through the header, substantially as set forth.

7. A wire-nail machine having in combination levers, shear-bladesmounted on said levers, and means for effecting an adjustment of theshear-blades on the levers longitudinally and in directions transverseof the operating movement of the blades, substantially as set forth.

In testimony whereof I have hereunto set my hand.

JOSEPH F. DONAGIIY.

Witnesses:

DARWIN S. VVoLoo'rr, F. E. GAITHER.

